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Types of wind: the general laws

Like a chameleon changes color, and what does it depend?

How to determine the direction of light without a compass using the available tools?

Why does it rain - where does it come?

What type of turtle to choose for the house?

Why is a rainbow colored?

Marvellous time when apple trees blossom

Earth's magnetic poles: can the inversion of the poles?

How old parrot lives in the home?

Why do birds fly and not fall?

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